diff --git a/kas/config.py b/kas/config.py
index c88a2b0..4a9cc60 100644
--- a/kas/config.py
+++ b/kas/config.py
@@ -35,7 +35,7 @@ class Config:
     """
         Implements the kas configuration based on config files.
     """
-    def __init__(self, filename, target, task=None):
+    def __init__(self, filename, target=None, task=None):
         self._override_target = target
         self._override_task = task
         self._config = {}
diff --git a/kas/plugins/shell.py b/kas/plugins/shell.py
index a7e067f..112356c 100644
--- a/kas/plugins/shell.py
+++ b/kas/plugins/shell.py
@@ -80,7 +80,7 @@ class Shell:
         """
 
         ctx = create_global_context(args)
-        ctx.config = Config(args.config, None, None)
+        ctx.config = Config(args.config)
 
         macro = Macro()